This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection: In 1988 Hansen predicted dire warming over the next decade and he was off by 300%. Why in the world should we listen to the same doom…

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection: Clouds are a very large negative feedback that will stop any drastic warming. The climate models don’t even take cloud effects into account. Answer: